I'm having the same problem, every time I'm in the server browser my internet completely dies out on me. Sometimes I'm lucky to get into a server, then there are times that I try to join and get "Connecting Failed". If I refresh the server browser every server disappears and I'm left to restart my game to get the servers back. When I quit the game my internet is completely down for 3-5 minutes, I even try loading things on my phone to see if it's a computer issue, but it takes forever to load anything up on my phone (iPhone 5, never have any issues with programs that require internet loading slowly).